In theory, the product quality delivered to users in the market should fully meet the requirements. However, due to uneven levels of quality control among producers, there will always be a variety of problems that arise during the application process. Compared to single-phase motors, some issues are more likely to occur during the testing phase of three-phase motor products, and some problems may be relatively concentrated or common.
Different wiring sequences can cause changes in the rotation direction of a three-phase motor.
According to the technical requirements of the motor product, if there are no special requirements and instructions, after connecting according to the marking requirements of the electric motor, the electrice motor should rotate clockwise, that is, when observing from the extended end of the electric motor shaft, the rotation direction of the electric motor should be clockwise.
In order to achieve this goal, the manufacturer of electric motor will adopt necessary control measures in the wiring process of the stator winding and verify it during factory testing.
In practical applications of electric motors, consumers generally do not pay much attention to compliance with this requirement and use reverse phase methods to meet their actual rotational needs.
However, in quality supervision spot checks on electric motors, testers will verify compliance with correct wiring for electric motor rotation.
The correctness and consistency issues regarding rotation direction for three-phase motors are problems that many manufacturers struggle to control; one reason for frequent occurrence is also due to users having a higher tolerance for this issue.
This problem mainly occurs when the quality management of the manufacturing factory is not in place, such as poor production and manufacturing process of motor winding, especially inadequate technical measures in the wiring process of the motor, which fails to regulate and control the magnetic field direction of the electric motor.
Another issue is poor control over inspection and testing of electric motors, with cases of missed inspections or incomplete coverage due to random sampling inspections.
The above-mentioned problems can be detected during new motor testing.
How to prevent such problems from occurring is a matter that any electric motor manufacturer must pay attention to it.
